Invoice Module Add/Select Project

On the new Invoicing module - there is only the option to add/select Nominal Code (no option to select project code) Would be handy to be able to select Project Code - especially if you only want to invoice a non-stock item like a free text/delivery or charge etc.. and apply to project code (but would still also be required for stock too where there is no picking/dispatch i.e. part of a large project)